# AGM408MN

**AGM-Semi** · MOSFETs · SOP-8

AGM408MN from AGM-Semi, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | S1 | passive | Source of MOSFET 1 (pin 1 marked by dot), rated for 40V drain-source and 11A continuous drain current. |
| 2 | G1 | input | Gate of MOSFET 1, with gate-source voltage limit of ±20V and threshold of 1.2V to 2.2V. |
| 3 | S2 | passive | Source of MOSFET 2, rated for 40V drain-source and 11A continuous drain current. |
| 4 | G2 | input | Gate of MOSFET 2, with gate-source voltage limit of ±20V and threshold of 1.2V to 2.2V. |
| 5 | D2 | passive | Drain of MOSFET 2 (tied with pin 6), 40V drain-source breakdown, 8.5mΩ typical RDS(on) at VGS=10V. |
| 6 | D2 | passive | Drain of MOSFET 2 (tied with pin 5), 40V drain-source breakdown, 8.5mΩ typical RDS(on) at VGS=10V. |
| 7 | D1 | passive | Drain of MOSFET 1 (tied with pin 8), 40V drain-source breakdown, 8.5mΩ typical RDS(on) at VGS=10V. |
| 8 | D1 | passive | Drain of MOSFET 1 (tied with pin 7), 40V drain-source breakdown, 8.5mΩ typical RDS(on) at VGS=10V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | AGM-Semi |
| Package | SOP-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDS |  |  | 40 | V | VGS=0V | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V | VDS=0V | 1 |
| Drain Current-Continuous | ID |  |  | 11 | A | Ta=25℃ | 1 |
| Drain Current-Continuous | ID |  |  | 5 | A | Ta=100℃ | 1 |
| Maximum Power Dissipation | PD |  |  | 2.5 | W | Ta=25℃ | 1 |
| Maximum Power Dissipation | PD |  |  | 1 | W | Ta=100℃ | 1 |
| Avalanche energy | EAS |  |  | 64 | mJ | TJ=25℃,VDD=25V,Vgs=10V,ID=16A,L=0.5mH,RG=25ohm | 1 |
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient | RθJA |  |  | 50 | ℃/W | Steady State | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 40 |  |  | V | VGS=0V ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | μA | VDS=40V,VGS=0V | 2 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V,VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 1.2 | 1.7 | 2.2 | V | VDS=VGS,ID=250μA | 2 |
| Drain-Source On-State Resistance | RDS(on) |  | 8.5 | 11 | mΩ | VGS=10V, ID=10A | 2 |
| Drain-Source On-State Resistance | RDS(on) |  | 16 | 20 | mΩ | VGS=4.5V, ID=5A | 2 |
| Source-Drain Current (Body Diode) | ISD |  |  | 11 | A |  | 2 |
| Forward on Voltage | VSD |  | 0.8 | 1.2 | V | VGS=0V,IS=10A | 2 |
| Forward Transconductance | gFS |  | 5.2 |  | S | VDS=5V,ID=5A | 2 |
| Input Capacitance | Ciss |  | 870 |  | pF | VDS=20V,VGS=0V, F=1MHZ | 2 |
| Output Capacitance | Coss |  | 265 |  | pF | VDS=20V,VGS=0V, F=1MHZ | 2 |
| Reverse Transfer Capacitance | Crss |  | 20 |  | pF | VDS=20V,VGS=0V, F=1MHZ | 2 |
| Turn-on Delay Time | td(on) |  | 5.6 |  | nS | VGS=10V,VDS=20V, ID=10A,RGEN=6Ω | 2 |
| Turn-on Rise Time | tr |  | 29 |  | nS | VGS=10V,VDS=20V, ID=10A,RGEN=6Ω | 2 |
| Turn-Off Delay Time | td(off) |  | 15 |  | nS | VGS=10V,VDS=20V, ID=10A,RGEN=6Ω | 2 |
| Turn-Off Fall Time | tf |  | 4.6 |  | nS | VGS=10V,VDS=20V, ID=10A,RGEN=6Ω | 2 |
| Total Gate Charge | Qg |  | 13 |  | nC | VGS=10V, VDS=20V, ID=10A | 2 |
| Gate-Source Charge | Qgs |  | 2.7 |  | nC | VGS=10V, VDS=20V, ID=10A | 2 |
| Gate-Drain Charge | Qgd |  | 1.6 |  | nC | VGS=10V, VDS=20V, ID=10A | 2 |

## CAD (KiCad official)

- Symbol: `AGM408MN`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `agm408mn-etched.step` / `agm408mn-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `agm408mn.step` / `agm408mn.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [AGM-Semi datasheet](docs/agm408mn-datasheet.pdf) (8 pp, sha256 `29805b842e11b356`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/agm408mn-datasheet.pdf)